Everything Apple (the Mac heads thread)

2015 model. Currently plugged in. Energy Saver settings in Power Adapter tab: Prevent computer from sleeping automatically, turn display off after 1 hr, wake for wifi network, enable power nap, do not put hard disks to sleep.

There is admittedly currently an external monitor plugged into the thunderbolt port via mini display. However the problem was there before. (On that note I'm getting real lag (to the point of crashing application [premiere pro] when I use the second monitor).

In fact the real reason I'm asking Apple Y U NO 2560x1600 is because I wanted to extend the application from the native retina display to the external display but it wouldn't let me. It would let me have the entire programme in one display and new panels could open in the other but I couldn't manually stretch to cover both.